Emily Lambert Jesse Mitchell Morgan McKnight Haylee Downton History Peter Woulfe gathered the existence of Tungsten from his analysis of wolframite in 1779 Tungsten was isolated as tungstic oxide by Carl W Scheele from ID: 427613
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Slide1
Tungsten: 74
Emily Lambert, Jesse Mitchell, Morgan McKnight, Haylee DowntonSlide2
History
Peter Woulfe gathered the existence of Tungsten from his analysis of wolframite in 1779.
Tungsten was isolated as tungstic oxide by Carl W. Scheele from
s
cheelite in 1781. But he did not have a reason furnace to reduce the oxide to metal.
Tungsten was lastly isolated in 1783 by two chemist and brothers in Spain, Fausto
and Juan Jose de Elhuyar. They did this by reduction of acidified wolframite with charcoal.
The name “Tungsten” means heavy stone. Slide3
Historical Facts
The word “Tungsten” comes from the words “Tung” and “Sten”. Those are Swedish words. They mean heavy stone.
Tungsten carbide was used by Osram, a German company. This was used in place of diamond drawing dies.
During World War 2, Tungsten carbide was needed for its weaponry production.Slide4
Used throughout history
Tungsten has been used by porcelain makers in China more than 350 years ago. They integrated a peach color in their designs by using a tungsten pigment.
During World War 2 Slide5
The Element :Tungsten
Symbol: W
Atomic Number: 74
Atomic Mass: 183.84 amu
Color: silver white Slide6
Physical & Chemical Properties
Boiling Point: 5660°C
Melting Point: 3410°C
At room temperature it is a solid.
Its classified as a metal.
It conducts electricity.
When mixed Thorium it becomes radioactive, and is dangerous to anyone who is exposed to it.
Also has the ability to shield radiation.Slide7
Chemical & Physical Properties Cont.
The dust of tungsten is flammable.
The dust of tungsten is explosive.
It does corrode if temperatures are above 400°C.
Tungsten reacts with halogens- fluorine and chlorine.
Tungsten doesn’t react with air, water, acids, and bases.Slide8
Uses
Tungsten has/are used for…
Filaments for incandescent light bulbs, fluorescent light bulbs, and television tubes
Jewelry
Used as a target for X-ray production
Heating elements in electric furnaces
Parts of spacecraft and missilesSlide9
Facts:
Symbol is from Wolfram.
Latin- Wolframium
Swedish- Volfram
French- Tungstene
Portuguese- Tungstenio
Has the highest melting point and boiling point of all metals.
Has the lowest vapor pressure.
Western Europe owns 30% of the worlds Tungsten, North America and China own 25%, Japan owns 13%. The remaining resources are in smaller countries.
Wolframite means “the devourer of tin”.
Pure Tungsten is soft and Tungsten Carbide is extremely hard.Slide10
Movie Clip:
https://www.youtube.com/watch?v=K1P8LpzFbh8Slide11
Mole Jokes
What did the mole say when his friends crashed the party?
The mole the merrier!
What kind of chip dip do you use on mole day?
GuacaMOLe!
Why is Avogadro in love with Cindy Crawford?
She's his favorite super-mole-dle (and she has a mole).
How much does Avogadro exaggerate?
He makes mountains out of mole hillsSlide12
CITES
Advameg, Inc. "Chemistry Explained."
Tungsten, Chemical Element
. N.p., 2014. Web. 16 Oct. 2014
Cannon Jennifer. ehow.com. Ehow. nd. Web. 14 Oct. 2014
.
chemicool.com. Chemicool. nd. Web. 14 Oct 2014
.
education.jlab.org. Jefferson Lab. nd
.
Web. 14 Oct 2014.
Elderfield & Hall, Inc. "Thoriated Tungsten Radioactivity."
Pro-Fusion
. N.p., n.d. Web. 16 Oct. 2014
Gagnon, Steve. "The Element Tungsten."
It's Elemental -
. Jefferson Labs, n.d. Web. 16 Oct. 2014
Live Science Staff. livescience.com. Livescience. 19 Aug 2013.Web. 14 Oct 2014
.
purdue.edu.com. Purdue Owl. nd. Web. 14 Oct 2014.
rsc.org. Royal Society of Chemistry. nd. Web. 14 Oct 2014
.
Tungsten World. "Tungsten Rings Hammer Test Vs. Titanium Rings Vs. Gold Rings - Tungsten World Reviews."
YouTube
. YouTube, 15 Apr. 2009. Web. 16 Oct. 2014
Winter, Mark. webelements.com. WebElements. nd. Web. 14 Oct 2014.